Noun
supervolcano (plural supervolcanoes or supervolcanos)
(volcanology) A powerful volcano, often having an explosive or cataclysmic eruption.
Synonym: (uncommon) hypervolcano
An asteroid or a supervolcano could certainly destroy us, but we also face risks the dinosaurs never saw: An engineered virus, nuclear war, inadvertent creation of a micro black hole, or some as-yet-unknown technology could spell the end of us. Elon Musk
It has been termed a " supervolcano " because the caldera was formed by exceptionally large explosive eruptions. Source: Internet
In the review, Byers refers to Mount Multnomah as a supervolcano. Source: Internet
Three times over the last 2.1 million years, the terrifying supervolcano beneath Yellowstone National Park has erupted with force a thousand times more powerful than Mount St. Helens. Source: Internet
The eruption of Mount Tambora in Indonesia in 1815 — the only known supervolcano eruption in modern history — was 10 times more powerful than Krakatoa and more than 100 times more powerful than Vesuvius or Mount St. Helens, according to the university. Source: Internet
The last Yellowstone supervolcano eruption went off an estimated 640,000 years ago and some fear Yellowstone is overdue another blast. Source: Internet